Helena Chmura Kraemer
Publication Details
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A new approach to integrating data from multiple informants in psychiatric assessment and research: mixing and matching contexts and perspectives.
Am J Psychiatry. 2003; (9): 1566-77
When there exists no single source of information (informant) to validly measure a characteristic, it is typically recommended that data from multiple informants be used. In psychiatric assessment and research, however, multiple informants often provide discordant data, which further confuse the measurement. Strategies such as arbitrarily choosing one informant or using the data from all informants separately generate further problems. This report proposes a theory to explain observed patterns of interinformant discordance and suggests a new approach to using data from multiple informants to measure characteristics of interest.

